Direct liquefaction coal preparation technology (lignite drying and pulverization)
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Our company is seeking partners who have expertise in technologies and equipment for drying and grinding lignite. Experts and professionals, please feel free to offer your advice! This post was last edited by xjqj70 on 2008-3-3 09:26]
A two-stage drying process is employed (tubular drying before the mill, and straight-tube pneumatic drying after the mill)； A dry, semi-open-circuit, intermediate-bin milling process is adopted. The hot flue gas used in drum dryers should be controlled at an appropriate temperature and oxygen content. The hot air used in the coal grinding equipment is a cycle of pure inert gas. Auxiliary equipment includes heating furnaces, circulation fans, dust removal fans, condensing coolers, and so on. This post was last edited by shanxg on 2009-1-14 15:10]
Hehe~~~ To start a discussion, there is very little publicly available information regarding the large-scale drying and pulverization technologies for lignite raw materials intended for direct liquefaction. I hope more colleagues and experts will join the discussion or offer insights. Thank you for participating!
I work in the field of lignite drying technology, and the technique we use at present is drum drying. If you are interested in exploring lignite drying technologies, feel free to contact me by email at xjcoal@126.com
I agree with the poster’s two-stage drying process; I have also been looking for technologies in this area. For lignite that requires a low moisture content, the two-stage drying process seems to be a complementary approach